FreeCalypso > hg > freecalypso-citrine
view bsp/irq_twiddle.S @ 13:a2723de00e06
L1/audio_cfile: untouched LoCosto source modules removed
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 10 Jun 2016 06:21:21 +0000 |
parents | 75a11d740a02 |
children |
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/* * TI's L1 code (and possibly other parts of the software suite) calls * functions named INT_DisableIRQ() and INT_EnableIRQ(); in the Leonardo * fw they are implemented (in a very ugly manner, as usual) in the * int.s entry point assembly module. Here we implement the same * functions in a cleaner way. */ #include "../nucleus/asm_defs.h" .code 32 .text .globl INT_DisableIRQ INT_DisableIRQ: mrs r0, CPSR orr r0, r0, #LOCKOUT msr CPSR, r0 bx lr .globl INT_EnableIRQ INT_EnableIRQ: mrs r0, CPSR bic r0, r0, #LOCKOUT msr CPSR, r0 bx lr